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June 14th, 2026 :: 7:56 am CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated June 14th at 6:54 am 
Overcast
Temperature:72°F Dew Point:68°F
Barometer:29.83 inHg Wind:N 21 Mph
Humidity:88.4% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jun 14th
Monday
Jun 15th
Tuesday
Jun 16th
Wednesday
Jun 17th
Thursday
Jun 18th
Mostly Sunny Mostly Sunny Mix of Sun and Cloud Mostly Cloudy with Showers Thundershowers
71°F
72°F
53°F
68°F
57°F
73°F
56°F
75°F
62°F
 
 Decatur Detailed Weather Forecast  
 
Sunday, June 14th, 2026
Morning Temperature: 65°F
A mix of sun and cloud. Windy at times.
Afternoon Temperature: 70°F
Mostly sunny. Windy.
Evening Temperature: 60°F
Clear. Windy at times.
Monday, June 15th, 2026
Overnight Temperature: 53°F
Mostly clear.
Morning Temperature: 61°F
Sunny.
Afternoon Temperature: 71°F
Sunny. Windy at times.
Evening Temperature: 66°F
Clear with cloudy periods. Slight chance of a thunderstorm.
Tuesday, June 16th, 2026
Overnight Temperature: 57°F
Clear.
Morning Temperature: 64°F
Cloudy with sunny periods. Windy.
Afternoon Temperature: 63°F
Mostly cloudy with showers likely. Windy at times.
Evening Temperature: 64°F
Mostly clear with a slight chance of showers or thundershowers. Windy at times.
Wednesday, June 17th, 2026
Overnight Temperature: 57°F
A mix of clear and cloudy skies.
Morning Temperature: 64°F
A mix of sun and cloud. Windy at times.
Afternoon Temperature: 71°F
Cloudy with showers. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 70°F
A mix of cloudy and clear skies with a few showers. Windy.
Thursday, June 18th, 2026
Overnight Temperature: 72°F
Mostly clear with a few showers. Chance of a thunderstorm. Wind 20 to 30 mph.
Morning Temperature: 72°F
Cloudy with sunny periods. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 74°F
Sunny with cloudy periods. Windy.
Evening Temperature: 64°F
A mix of cloudy and clear skies. Windy at times.
Friday, June 19th, 2026
Overnight Temperature: 55°F
Clear.
Morning Temperature: 62°F
Sunny. Windy at times.
Afternoon Temperature: 72°F
Mostly sunny. Windy at times.
Evening Temperature: 64°F
Clear. Windy at times.
Saturday, June 20th, 2026
Overnight Temperature: 58°F
Mostly clear.
Morning Temperature: 61°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 61°F
Cloudy. Windy at times.
Evening Temperature: 62°F
A mix of cloudy and clear skies.
Sunday, June 21st, 2026
Overnight Temperature: 58°F
A mix of cloudy and clear skies.
Morning Temperature: 59°F
A mix of cloud and sun with a slight chance of showers.
Afternoon Temperature: 64°F
Sunny with cloudy periods.
Evening Temperature: 59°F
Mostly clear.
Monday, June 22nd, 2026
Overnight Temperature: 53°F
Mostly clear.
Morning Temperature: 59°F
Sunny. Windy at times.
Afternoon Temperature: 72°F
Mostly sunny. Windy at times.
Evening Temperature: 66°F
Mostly clear.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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